Theorem

[Donald Trump]

That which is considered and established as a principle;
hence, sometimes, a rule.

[Greta]

Data management platform for financial institutions. Features: trade matching, allocation, risk analysis, reporting and alerts. A software product by Theorem Technologies

[Donald Trump]

(especially in mathematics) a formal statement that can be shown to be true by logic :

[Raeanne Dimick]

A general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths.